Steam bowl for chemical laboratories



May 8, 1923.

J. MNZIES STEAM BowLFoR CHEMICAL LABORATORIES 2'She'ets-'Sheet 2 Filed may 2'7. 1922 Patented May 8, 1923.

unirsi) STATES JOHN MENzIEs, y0E NEW HAVEN, CONNECTICUT.

STEAM BOWL FOR CHEMICAL` LABORATORIES.

`Appnmai-in' med may 27, 1922. semi Nq. 564,257;

y To all whomz't may Concern:`

-Be it known that I, JOHN' MENzIEs, a citizen of the United States, residing at New Haven, in the county of NewI-Iaven and State of Connecticut, have invented a new and useful Improvement in Steam Bowls for Chemical Laboratories; and I do hereby declare the'following, when taken in connection with the accompanying drawings and the characters yof reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute'pa-rt of this application and represent, in

Fig. 1 a plan view of my improved steam bowl for chemical laboratories, the slab in which it is mounted being shown as broken away- I Fig. 2 a view lthereof* in side elevation, with the-slab in section.

Fig. 3 a view in horizontal section on the line 3-3 of Fig. 2. 1

Fig. 4: a detached view, partly in side elevation and partly in section, of the funnel-shaped funnel-mount of the device.

Fig. 5 a view in vertical sectionv of my improved device, with a porcelain funnel positioned in its funnel-mount, a flask being shown by'broken lines in the funnel.

Fig. 6a view corresponding to Fig. 1, showing the device as converted for use as i a hot plate.

a Fig. 7 a viewin vertical section on the line 7-7 of Fig..6.

Fig. 8 a detached View, in side elevation, of the removable combined hot-plate and guard. f a

My- 'nvention relates to an improved steam bowl for chemical laboratories, the object being to produce a simple, convenient,

v durable and efficient piece of laboratory apparatus, constructed with particular reference to avoiding the accumulation of slop, such as water and chemicals around it upon the laboratory bench, to preventing the leakage ofthe slop through the bench, and the accumulation of corrosive yacids inthe trap, and to providing for the conversion of the bowl, when not in use? as such, into a hot plate.

With these ends in views, my invention consists lin a steam bowl for chemical laboratories, having certain details of ,construction and combinations of parts as will be hereinafter described and pointed out in the claims.

In carrying out'my invention, as herein shown, I employ `a one-piece,l cast-metal, funnel-shaped funnel-mounting 10 having, at `its upper end, an annular assemblyflange 11 and formed at its lower end with an externally-threaded sleeve 12. Wit-hin its upper edgethe said funnel-mount is formed with four regularly-spaced, inwardly-projecting, segmental suspensionlugs 13, separated by drainage-passages.14:.

The said lugs provide for the suspension in the mount of an ordinary porcelain funnel 15, and the creation of a free, conical drainage-space 16, between the interior surface of the-"funnel-mo'unt and the exterior surface of the funnel, access to this space 16 being had through the drainage-passages 14; aforesaid. Any wateror chemical slop which may accumulate from the condensation Vof vapor or in any other way uponA the slab 17 passes downward4 through this space 16 into vthe sleeve 12 of the mount 10 and thence into a trap 18, which is formed with aneXternaflly-threaded opening 19, adapting itl to be screwed directly upon the lower end of the said sleeve. l

The flange 11 of the mount 10 fits into a shallow, annular recess 20 in the slab 17, with the upper face of which the upper face of theilange is substantially flush, the said recess 2O being located at the upper end of a conical mounting-opening 21 formed in the slab and correspo-nding in fiare'or pitch to that of the funnel-shaped funnel-mount 10. For firmly seating the mount l0 in the slab 17, I employ what I may term a skeletonized spacer, comprising an upper ring 22 and a lower ring 23, connected by inclined webs or struts 24, the upper ring being considerably larger in diameter than the lower ring. This spacer is' passed upward over the lower end of the mount 10, with which it is concentric and is interposed between the lower face'of the slab 17, and the upper face of a lnut 25 turning on the threaded` sleeve 12. When the nut 25 is turned to lift it upon the sleeve 12, the upper ring of the spacerv is jammed against the lowerv face of. the slab, with the effect of firmly seating the flange 11' of the mount in the'v annular recess 2O of the slab. In this manner the mount is firmly positioned in the slabf The trap 18, aforesaid, has a lateral passage 26 leading out of its bottom, on the level'of the floor thereof, into a vertical pas- Y sage 27, which, in turn, leads into a lateral, internally-threaded outlet-passage 28 receiving a threaded discharge-pipe 29. The floor of the passage 2G is provided with a cleanout hole 30, normally closed by a plug 31, whereby any acids or heavy sediment not carried ofi' by the flow of the fluid through the trap, may be readily cleaned out. The bottom of the trap is formed with a threaded-opening 32 concentric with its opening 19, for the reception ofla feed steam-supply pipe 33 mountinga jet-tube 34, over which the stem of the porcelain funnel 15 is set, the upper end of this tube being plugged and provided with upwardly-inclined perforations, through which the steam `iets into the funnel and upon the flask 35 or other vessel set therein.

Under thel construction described, the water of condensation or any liquid material that may be spilled on the Slab 17 will be immediately carried oli' through the drainage-spaces 14 and 16, and discharged into the trap 18, thus avoiding all slop upon the bench during the conduct of an experiment.

In case it is desired not to use my| improved bowl as such, it is only necessary to remove the funnel 15 and replace it by means of a hot plate, which performs lthe additional function of a guard in the sense that it prevents the access of small objects, such as corks, Stoppers, etc., into the Vfunnelshaped funnel-mount, since it virtually closes the mouth thereof, though not to the passage of liquids. This combined hot plate and Aguard consists of a disk-like hollow head 36 formed in its edge with ,drainage-notches 37 and carrying a hollow stem 38 corresponding to the shank of the porcelain funnel 15 and passing below the water level of the trap when it replaces the shank of the funnel therein.

I claim:

1. In a steam bowl for chemical laboratories, the combination with a slab, of a funnel-shaped funnel-mount, means for fastening the Haring upper end thereof in the said slab, a funnel installed in the said mount, with a clearance-space between it and the same lfor the escape of superfluous liquids accumulating around the mouth of the mount, a trap mounted upon the lower end of the mount for the reception of such liquids, and a steam tube mounted in the said trap concentric with the said funnel and rising from the trap thereinto.

2. In a steam bowl for chemical labora,- tories, the combination with a slab, of a funnel-shaped funnel-mount set by its upper portion into the said slab, and lhaving its depending-sleeve externally-threaded, a lock-nut mounted upon the lsaid sleeve, a spacer interposed between the nut and the lower face of the slab, whereby the said mount is firmly seated in the said slab, a funnel installed in the said mount with a VClearance-space between it and the same, and a 4trap' mounted upon the said sleeve at a point-below the said` spacer for receiving fluids escaping through the conical space between the said funnel-shaped funnel-mount and the funnel suspended therein.

3. In a steam bowl for chemical laboratories, thek combination with a slab, of a funnel-shaped fuimel-moun'ty set into the said slab and internally adapted for the clearance-suspension of a funnel therein and provided with an eXternally-tlneaded depending sleeve, a lock-nut mounted upon the said sleeve, and a spacer interposed between the said nut and the lowerface of the slab, whereby the said mount is firmly seated in the said slab.

4. In a steam bowl for chemical laboratories,'the combination with a slab, of a funnel-Shaped funnel-mount set into the said slab -and formed at its upperend with an assembly flange and at its lower end with .a threaded sleeve, and adapted within its upper end for the clearance-suspension 'in it of a porcelain funnel; a nut mounted upon the said sleeve, and a skeletonized, flaring spacer interposed between the said spacer and slab for firmly seating the said mount therein. 5. In a steam bowl for` chemical laboratories, the lcombination with a. slab, of a unvnel-shaped funnel-mount set by its upper' uportion into the said .slab and having a, depending, eXte'rnally-threaded sleeve, a funnel located in the said mount, means for the Clearance-suspension of the said funnel inthe y'said mount forV ythe creation and mainte- 'nance of a conical 'space between them, 'a trap mounted upon the depending .threaded sleeve of the mount for receiving the vfluids draining from the Aslab through the ,Said conical space between 'the 'mount and funnel, and a steam tube rising into the funnel.

6. Ina steam bowl for chemical laboratories, thecombina'tion with a slab, of ,a fun- 'nel-shaped funnel-mount having its flaring upper endlocate'd therein, means applied to the mountand engaging with the lower face of the slab for holding it firmly in place, a funnel suspended in the said mount concentric therewith, with aclearan'ce space between it 'and the same, a trap mountedv upon the lower portion of the mount and receiving liquids .discharged thereinto, and a .steam tube mounted in the trap concentric with the funnel and extending upward thereinto, the said trap having a lateral passage leading out of vits bottom into avertical V passage vopening into a passage receiving Va discharge-pipe.

7. In a steam bowl Afor chemical laboratories, the combination with a slab, ofja funnel-shaped funnel-mount having its Haring upper end set into the said slab and having its depending sleeve externally-threaded, a lock-nut mounted upon the said sleeve, a spacer interposed between the lower face of the slab and the said nut, whereby the mount is firmly held in the slab, a Jiunnel located in the said mount concentric therewith, with a clearance-space between it and the same, a trap mounted upon the threaded lower end of the said mount for the reception of liquids escaping into the said clearance space from the top of the slab, a steam-pipe mounted in the trap concentric with the funnel and rising thereinto, and a combined hot-plate and guard consisting of a head and a tubular shank, the former being adapted to substantially occupy the upper end of the funnel and the latter being adapted to pass downward over the steamtube into the trap.

8. In a steam bowl for chemical laboratories, the combination with a slab, of a funnel-shaped funnel-mount, means for firmly seating the same in the slab, a trap applied to the projecting lower end of the said mount, a steam-tube rising from the said trap, anda combined hot plate and guard consisting of a hollow disk-shaped head and a depending tubular shank, the said head being formed in its edge with drainagenotches into which liquids accumulating upon the slab are discharged into the ooncentric space between the mount and funnel and thence rinto the trap. l

In testimony whereof, I have signed this specification in the presence-of two subscribing Witnesses.

JOHN MENZIES. Witnesses:

GEORGE DUDLEY SEYMOUR, MALCOLM P. NICHOLS. 

